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1. A
   Hybridisation of each carbon atom is $sp^{3}$
2. B
   Hybridisation of each carbon atom is $sp^{2}$
3. C
   Electrons are delocalized over the whole sheet of atoms
4. D
   Each layer is composed of hexagonal rings

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1. A
   Charcoal
2. B
   Coke
3. C
   Fullerene
4. D
   Carbon black

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1. A
   insolubility in water
2. B
   ability to form a complex with haemoglobin
3. C
   ability to reduce some metal oxides
4. D
   property of having one sigma bond

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1. A
   Lithium
2. B
   Sodium
3. C
   Rubidium
4. D
   Caesium

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1. A
   Robert Brown
2. B
   Robert Hooke
3. C
   Leeuwenhoek
4. D
   Rudolf Virchow

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1. A
   Grass, human and fish
2. B
   Grass, goat and human
3. C
   Tree, tree cutter and tiger
4. D
   Goat, cow and human

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1. A
   Nervous tissue
2. B
   Muscle tissue
3. C
   Bone tissue
4. D
   Blood tissue

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1. A
   Protein only
2. B
   Lipid
3. C
   Carbohydrate only
4. D
   Protein and Carbohydrate

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1. A
   Kanpur
2. B
   Lucknow
3. C
   Hajipur
4. D
   New Jalpaiguri

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1. A
   1 only
2. B
   2 only
3. C
   Both 1 and 2
4. D
   Neither 1 nor 2

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1. A
   Beas
2. B
   Ravi
3. C
   Chenab
4. D
   Tawi

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1. A
   Manas
2. B
   Pakke
3. C
   Nagarjunasagar Srisailam
4. D
   Periyar

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1. A
   Tombolo
2. B
   Sand bar
3. C
   Stack
4. D
   Spit

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1. A
   1, 2 and 3
2. B
   2, 3 and 4
3. C
   2 and 3 only
4. D
   1 only

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1. A
   cold and dry climate
2. B
   hot and humid climate
3. C
   hot and dry climate
4. D
   cold and humid climate

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1. A
   1 only
2. B
   2 and 3
3. C
   1 and 3
4. D
   2 only

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1. A
   Applied force
2. B
   Frictional force
3. C
   Restoring force
4. D
   Virtual force

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1. A
   It can be either positive or negative
2. B
   It can have zero value
3. C
   It is unity for all materials
4. D
   It is always greater than one

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1. A
   They can emanate from a point
2. B
   They do not cross each other
3. C
   Field lines between two poles cannot be precisely straight lines at the ends
4. D
   There are no field lines within a bar magnet

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1. A
   0·10 m
2. B
   2 m
3. C
   4 m
4. D
   0·25 m

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1. A
   Sodium
2. B
   Potassium
3. C
   Rubidium
4. D
   Caesium

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1. A
   Potassium
2. B
   Calcium
3. C
   Magnesium
4. D
   Strontium

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1. A
   Tungsten
2. B
   Copper
3. C
   Rubidium
4. D
   Aluminium

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1. A
   1 and 2 only
2. B
   2 and 3 only
3. C
   1 only
4. D
   1, 2 and 3

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1. A
   Saal
2. B
   Chir
3. C
   Spruce
4. D
   Deodar

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